[epiphany] Add Open Menu entry to Keyboard Shortcuts page

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 1dbc84953edfbacd48e433bc80cc3a3de8897a19
Author: Sabri Ünal <libreajans gmail com>
Date:   Tue Jan 28 19:06:41 2020 +0300

    Add Open Menu entry to Keyboard Shortcuts page

 src/resources/gtk/shortcuts-dialog.ui | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/src/resources/gtk/shortcuts-dialog.ui b/src/resources/gtk/shortcuts-dialog.ui
index 57051fbf4..a33d7a8b3 100644
--- a/src/resources/gtk/shortcuts-dialog.ui
+++ b/src/resources/gtk/shortcuts-dialog.ui
@@ -62,6 +62,13 @@
                 <property name="accelerator">F1</property>
               </object>
             </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Open menu</property>
+                <property name="accelerator">F10</property>
+              </object>
+            </child>
             <child>
               <object class="GtkShortcutsShortcut">
                 <property name="visible">True</property>